How does resin molecular weight distribution affect WPC processing?
The molecular weight distribution (MWD) of resin plays a critical role in the processing and performance of wood-plastic composites (WPCs). A broader MWD typically improves melt flow and processability during extrusion or injection molding, reducing energy consumption and enhancing filler dispersion. However, it may compromise mechanical properties like tensile strength. Conversely, a narrow MWD offers better mechanical performance but can lead to higher melt viscosity, making processing more challenging. Balancing MWD is essential to optimize WPC properties such as durability, flexibility, and surface finish. Understanding these effects helps manufacturers tailor resin formulations for specific applications, ensuring efficient production and high-quality end products.
